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Patent Searching and Data


Title:
CHECK VALVE
Document Type and Number:
WIPO Patent Application WO/2019/188948
Kind Code:
A1
Abstract:
Provided is a check valve in which the occurrence of chattering can be effectively suppressed. This check valve is provided with: a housing provided with an inlet flow passage, a valve chamber, and an outlet flow passage; a seat member provided around the inlet flow passage and having a seat section; a valve body pressed against the seat section to close the inlet flow passage; a biasing member which presses the valve body toward a valve seat; a guide section provided to the housing and guiding the valve body when the valve body moves in an axial direction; a damper chamber communicating with the valve chamber through the clearance between the valve body and the guide section and damping the axial movement force of the valve body. The biasing member is disposed within the valve chamber.

Inventors:
KATO, Yuki
NAKAMURA, Noritaka
KATO, Kodai
SAKATA, Yukinobu
KIYOSE, Hiromitsu
Application Number:
JP2019/012427
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
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Assignee:
KAWASAKI JUKOGYO KABUSHIKI KAISHA (1-1 Higashikawasaki-cho 3-chome, Chuo-ku Kobe-sh, Hyogo 70, 〒6508670, JP)
International Classes:
F16K47/02; F16K15/06
Foreign References:
JPH11325285A1999-11-26
US4413688A1983-11-08
JPS3615336B1
JPS5028031A1975-03-22
US1691449A1928-11-13
JPS5117828U1976-02-09
US3595265A1971-07-27
JP2012007639A2012-01-12
JP2008121721A2008-05-29
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (3rd Fl, Bo-eki Bldg. 123-1, Higashimachi, Chuo-ku, Kobe-sh, Hyogo 31, 〒6500031, JP)
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